feat(topup): add payment_type field and update AdminTopupCreateView to handle payment type ✨

billing/migrations/0015_topup_payment_type.py

@@ -0,0 +1,21 @@
+# Generated by Django 5.2 on 2025-07-27 07:08
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("billing", "0014_wallettransaction"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="topup",
+            name="payment_type",
+            field=models.CharField(
+                choices=[("CASH", "Cash"), ("TRANSFER", "Transfer")],
+                default="TRANSFER",
+                max_length=20,
+            ),
+        ),
+    ]